Deploy Drupal 9


If you have been customizing your existing project as you go, now is the time to ensure all code is committed to Git and to git push to on the master branch. That will cause to build your code, producing a read-only file system image of your application, and then deploy it into a running cluster of containers.

You can view the process from the Management Console; when it is done, click the URL shown in the Console to see your site.

Post-install (new site) 

If you are creating a new site, visiting the site in your browser will trigger the Drupal installer. Run through it as normal, but note that you will not be asked for the database credentials. The settings.platformsh.php file added earlier automatically provides the database credentials, and the installer is smart enough to not ask for them again.

Once the installer is complete you will be presented with your new site.

Data migration 

If you are moving an existing site to, then in addition to code you will also need to migrate your data. That means your database (generally MySQL/MariaDB, although PostgreSQL is also available) and your files.

Importing the database 

First, obtain a database dump from your current site. If you are using MySQL/MariaDB, then the mysqldump command is all you need. Save your dump file as database.sql. (Or any name, really, as long as it’s the same as you use below.)

Next, import the database into your site. The easiest way to do so is with the CLI.

$ platform sql -e master < database.sql

That will connect to the database service on the master environment, through an SSH tunnel, and run the SQL import.

Importing files 

You will first need to download your files from your current hosting environment, whatever that is. The easiest way is likely with rsync, but consult your old host’s documentation. For this guide, we’ll assume that you have already downloaded all of your user files to your local web/sites/default/files directory, and your public files to public. If you have them in a different directory, adjust the following commands accordingly.

The platform mount:upload command provides a simple, straightforward way to upload an entire directory to your site at once. Under the hood it uses an SSH tunnel and rsync, so it will be as efficient as possible. (There is also a platform mount:download command you can use to download files later.) Run the following from your local Git repository root (modifying the --source path if needed).

$ platform mount:upload -e master --mount web/sites/default/files/ --source ./web/sites/default/files/
$ platform mount:upload -e master --mount private/ --source ./private/

Note that rsync is picky about its trailing slashes, so be sure to include those.

Your files and database are now loaded onto your production environment. When you make a new branch environment off of it, all of your data will be fully cloned to that new environment so you can test with your complete dataset without impacting production.

Go forth and Deploy (even on Friday)!